2016 GMC SIERRA 1500 Service Brakes Problems

I towed a trailer last month and noticed some hard breaking issues in slow moving traffic. Las night as I was parking my vehicle under the car port, I had to press on the brakes to straighten my vehicle and as I was moving forwards slowly, my brakes failed, the pedal was stiff and I almost hit my other vehicle and the garage door.

Driving at low speed such at in drive thru or parking lot if you press brake couple repetitive times pedal gets hard and you have to press really hard to stop it’s like vacumn assist losses vacumn in braking assist been happening last couple years but I’ve learned to adjust my braking at low speed to adapt

Stopping at a stop sign with several cars in front of me my vehicle wouldn’t stop, luckily the car in front of me moved. I immediately called the dealership to have my vehicle repaired. They confirmed my brakes had a problem including the vacuum pump having an internal failure. They replaced vacuum pump and required belts then charged me $800.00 for this service.

On a recent road trip my family and I experienced an issue with the Brake Assist on my 2016 GMC Sierra. When I returned back from our vacation I took the vehicle to a 3rd party mechanic that I trusted to perform diagnostics. He advised that I would need a new vacuum pump and stretch belt to correct the issue. Upon receiving this information I advised him to move forward with the repair. What I didn't know was that Special Coverage N182202780 covers this exact repair from GM at no cost to the customer. I followed up with GM to see if I could recoup any of the cost and I was told no because I didn't get the work done at a GM dealership. I find this to be extremely frustrating as I did not know there was a special notice that would have covered this defect, and if I had I would of taken the vehicle to a GMC dealership. I feel that GM should reimburse me for the defect that was known even if I had the vehicle serviced at my chosen mechanic. Any help would be greatly appreciated

Braking system is malfunctioning while driving at slower speeds. It has malfunctioned while backing up and almost hit another vehicle. It also malfunctioned while coming to a stop light. Brake system is not working as it should and is feeling spongy upon braking. It feels like the brake pedal is all the way to the floor before it will eventually stop the truck. In researching this problem, there was a recall on the secondary brake system back in Feb of 2020. I bought the truck in June of 2020. I never got any information that there was a recall from the dealership I bought it from. I am unable to drive my truck due to this problem. I have not taken the truck to a GMC dealer as of yet but planning to.

Brakes go out at low speeds, especially in reverse. Makes it really hard to stop vehicle. It happens at least once every couple days and seems to be getting progressively worse.

While parking in San Francisco after driving for about 100 miles, the brakes felt they had lost all power, the pedal was pressed down to the floor and caused the braking distance to increase drastically. There was a fence post to the left of my truck. So I was going to go forward a little then back up and straighten out to pull forward and finish parking. Going slow 3-5MPH I pressed the brake and the truck kept going forward, I felt a shake from the brake pedal and then no pressure, straight to the floor, then the brake pedal didn’t return up. i kept pressing/pumping the brake pedal but still felt like there was no power at all. When you released the brake pedal the pedal would not return to the top like normal. So the truck would not stop, it felt like forever, but when the truck did stop it had just come to rest on the fence post left of me, causing a small dent on the, rear passenger, driver side door. This was really scary because I was parking on a ocean pier and I though I was going to go into the fence in front of me and then into the water. I know now that that was most likely not going to happen because of the low speed I was going at but non the less SUPER SCARY. So now I have a dent on my truck and I am also scared to drive the truck because the brakes might not work when I need them too.

Power brake booster failed, truck would not stop in a timely manner

Brakes will sometime seize up and not allow car to stop in sufficient time.

Out of the blue I am getting constant trailer brake system alarms dinging at me. Even if I select dismiss the alarm keeps coming back. There seems to be no way of getting this to stop.

At low/idle speeds the brake pedal becomes hard and will not stop. At speeds between 35-75mph the engine/transmission has a vibration about every 10seconds and the transmission shifts hard and/or rough at times when first taking off.

At low speed (5 mph or less), my GMC truck looses brake pedal resistance and I have to mash the pedal hard to stop.... very dangerous when in traffic, parking lot or pedestrians crossing in front. This needs immediate attention. No warning lights on dash. After researching this issue online I discover there are many youtubes and complaints about this apparent brake vacuum pump problem). I also see where there is a recall of over 3.5 million Chevy/GMC vehicles (recall #s N202300860 and N192268490) for this exact low speed brake pump problem. My GMC truck falls within this recall (GMC Sierra LD between 2014 and 2018). But when I check my VIN # on the NHTSA website, it states no recall. How can this be? It clearly is the exact same issue. Please explain.

Was in a parking lot, moving just 2mph and had to literally mash down on the brake pedal - both forward and backward. Also, I put my truck in drive and has been making a noise in the transmission it seems and is a loud + lurches forward a bit. Additionally, I was traveling on vacation to Rockport, TX. I've made a appointment with the dealership here at 10:00 A.M. on 9 Dec 22, it's the earliest I can get my truck in. There was previously a brake issue covered under warranty & should be again!

Brakes give out in the parking lot or at low speeds out of no where. I was told there are recalls for this but I looked it up and it’s saying no? I don’t wanna have a brake failure and wreck. Looking for some help please

I'm having problems with my low speed braking. When I am breaking at low speed such as at a stop sign or parking, it's like the pedal stops working, gets stiff, and I have to brake very hard to get it to work. This is of great concern to me as a safety hazard. Unable to stop in a parking structure or at a stop sign/signal can be fatal and this needs to be addressed and dealt with immediately.

Trailer brake system service light

The brakes stop working at low speeds and the brakes drag and it doesn’t stop.

At low speeds my brakes do not work well. Mostly while driving at idle speeds like in a parking lot the brake pedal gets hard and the truck does not stop very easily. If you idle the truck up to a higher RPM, the brakes begin to function properly again.

I purchased a certified pre owned 2016 sierra slt in February and just after a month of owning it a notification started to pop up and chime on my dash stating "SERVICE TRAILER BRAKE SYSTEM". I have had my truck in the shop multiple times after to have this issue repaired and nothing has worked. They replaced the dash GM Genuine Part 84108373 break controller switch and buttons, the GM Genuine Part 23337305 trailer brake control module as well as the 7/4 pin 23404450 GM OEM Trailer Tow Receptacle. Nothing has fixed this issue! when the truck chimes I lose my trailer breaks and this is extremely dangerous hauling a camper weight 6500lbs. I also lose the ability to make phone calls, hear my blinker also the radio. This renders my truck inoperable and a danger to drive.

We recently had the recall installed on our truck, which was a brake software update for "increased brake pedal effort". No other work was performed and we had had no other issues prior to the recall being performed. Now, after the recall software update, we have all of the symptoms of the low speed increased brake pedal effort. There have been multiple times where we can barely get the truck to stop at low speed in a parking lot. The brake pedal vibrates and can hardly be pressed. Took it back to the dealer to complain about the recall installed and they said they would give a small discount for a vacuum pump repair but other than that there was nothing they could do due to our high mileage.

The contact owns a 2016 GMC Sierra 1500. The contact stated while attempting to park the vehicle, the brakes failed to function as needed while being depressed. The contact stated no warning light was illuminated. The vehicle was not diagnosed or repaired. The manufacturer was informed of the failure and was awaiting a response. The failure mileage was unavailable.

Mileage: 5

Brakes failed in parking lot, had a solid pedal and could not get truck to stop

At low speed, parking in reverse, brakes began failing. Symptoms included a vibrating brake pedal, and a large change in the amount of pressure needed to depress the brake pedal (low pressure required). Pedal went to floor without stopping power. Symptoms match existing NHRTA campaign 20V603, but 2016 is not currently covered by the existing recall.

-Engine gas consumption states 21 MPG Highway, 17 MPG combined and 15 MPG City. -When I started using vehicle during the first weeks and months the best MPG I could geta at the highway was 18.5 MPG with top-tier gas. -Ever since I bought the vehicle, the gas MPG have gone down around 0.5 MPG. The vehicle feels that it has to use more gas in order to perform the level of task everyday. -The motor oil pump at times moves down from the 40 mark to the 20 mark when idle at traffic light and it starts moving, it temporarily goes to the 60 mark. At other times when idle it stays in the 30 mark. -The transmission is an 8 speed automatic. It has issues shifting 1st and 2nd gear, and at times 3rd gear as well. When driving at slow speeds like in a traffic jam, mall parking, do a u turn or when you slow down at the traffic light and then turns green and you start accelerating again it feels harsh on gearing up and down. -This vehicle has the Active Fuel Management (AFM) system, it turns on even at slower speeds and you feel how the engine and transmission struggle to accelerate, go a gear up and push the vehicle with only 4 cylinders. Like in manual transmissions when you accelerate on a higher gear than the correct one, it takes forever to accelerate and properly change to 8 cylinder and establish the correct gear and ratio. -Even if all 8 cylinders on it it feels like if I am running on a smaller engine. -There was a fix done to the transmission for a valve, but the vehicle still runs the same as before. -There is a knocking noise starting to build in the engine. Best mileage I can get driving the same and gas is 13 MPG combined. -The recent safety recall for the breaks is actually making the breaking worse than before. -My vehicle is 2016 GMC Sierra All Terrain V8 5.3L 4WD Z82 with 36,500 miles on it and is doing all this and its getting worse little at a time.

At very low speed, my brakes fail. They work fine at regular speed. It’s only when I am parking or like at a drive thru. I almost hit someone.

Brakes at low speeds and in drive ways and parking lots when stopping brakes won't work very dangerous a recall was issue but not for my truck, the vacuum pump is bad on my truck

AT SLOW SPEED THE BRAKE BECOMES ROCK HARD AND CANNOT BE PUSHED IN. I HAVE RESEARCHED A RECALL # N192268490. I HAVE SEARCHED MY VEHICLE BY VIN AND IT STATES NO RECALL WHICH I DON'T UNDERSTAND. I BELIEVE IT IS SOMETHING RELATED TO THE SLOW SPEED BRAKE MODULE. I WOULD LIKE TO KNOW IF THIS IS AN ACTUAL RECALL AND WHY THIS VEHICLE IS NOT INCLUDED.

Mileage: 67,000

"SERVICE BRAKE ASSIST" MESSAGE HAS CONTINUOUSLY SHOWN UP ON DASH FOR OVER A YEAR, ESPECIALLY WHILE AT LOW SPEED IN REVERSE MOST COMMONLY. VEHICLE FEELS LIKE POWER BRAKES NO LONGER FUNCTION AND VEHICLE CONTINUES TO ROLL UNLESS YOU STAND ON THE BRAKE PEDAL. THIS IS SUPPOSEDLY AFTER THE RECALL REPAIR.

Mileage: 70,000

BRAKE ASSIST LIGHT CAME ON AND I HAD NO BRAKES WHEN I PUSHED THE PEDAL HARDER BRAKES TRIED TO LOCK UP I ALMOST WRECKED

MIPOWERED BRAKE-ASSIST SYSTEM, WHICH REDUCES THE AMOUNT OF EFFORT A DRIVER NEEDS TO EXERT TO STOP THE VEHICLE. IF THE SYSTEM FAILS, A DRIVER MAY FIND THAT THE BRAKE PEDAL TAKES MUCH MORE EFFORT TO PUSH. DRIVERS MAY ALSO FIND THAT IT TAKES MORE DISTANCE FOR THEIR VEHICLE TO STOP, WHICH COULD LEAD TO A CRASH,

Mileage: 64,000

THE BRAKES ARE VERY HARD TO PRESS AT LOW SPEED MORE SO AFTER I HAVE PRESSED THEM A COUPLE TIMES OR MORE WHILE IN MOTION IN STOP AND GO TRAFFIC . I HAD A RECALL FOR THIS ABOUT A YEAR AGO AND TOOK IT TO THE DEALER TO HAVE IT FIXED BUT JUST STARTED EXPERIENCING THIS PROBLEM WITHIN THE LAST COUPLE OF MONTHS. VERY SCARY TO NOT HAVE POWER BRAKES ALL OF A SUDDEN! THE RECALL OBVIOUSLY DOES NOT FIX THE PROBLEM!!

Mileage: 78,000

WHEN TRAVELING BACKWARDS AT LOW SPEED IT APPEARS THAT MY ABS IS TRYING TO TURN ON. THE LIGHT DOESN'T COME ON, BUT IT IS VERY HARD TO STOP. IT WILL DO IT GOING FORWARD, BUT MAINLY BACKWARDS.

Mileage: 100,500

WHILE MOVING SLOWLY IN TRAFFIC (~5MPH) WHEN APPLYING LIGHT BRAKE PRESSURE IT FELT LIKE ABS WAS KICKING IN AND THERE WAS NO BRAKING. THIS HAPPENED TWICE BEFORE THE BRAKES RESUMED NORMAL OPERATION. HAPPENED AGAIN AS I WAS BACKING OUT OF MY DRIVEWAY. THE RECALL REGARDING THE REPROGRAMMING OF ECBM (N192268490) WAS DONE ALREADY.

Mileage: 60,000

BRAKES FAIL. WILL NOT ALLOW VEHICLE TO COME TO A COMPLETE STOP WHEN GOING FORWARD OR IN REVERSE. WHEN ACCELERATING VEHICLE VIOLENTLY SHAKES. THIS HAPPENS AT ANY SPEED ABOVE 20MPH.

Mileage: 35,000

AT LOW SPEEDS THE BRAKES GET VERY HARD TO PRESS AND THE TRUCK TAKES LONGER TO STOP. THE SERVICE BRAKE LIGHT HAS CAME ON SOMETIMES WHEN THIS OCCURS. I'VE SEEN AN OPEN RECALL FOR THE EXACT PROBLEM WITH MY TRUCK, BUT WHEN I ENTER MY VIN IT SAYS MY TRUCK IS NOT PART OF THE RECALLED VEHICLES. PLEASE HELP ME

Mileage: 120,000

BRAKES BECAME SPONGY WHILE HAULING A BOAT ALMOST CRASHED WHILE COMING TO A STOP AT A TRAFFIC LIGHT BRAKES WERE HARD TO COMPRESS. VEHICLE DIDN'T WANT TO STOP IMMEDIATELY... HAD TO USE THE EMERGENCY BRAKE TO COME TO A COMPLETE STOP. RIGHT AFTER THE SERVICE WARNING SIGN CAME ON SHOWING ( BRAKE ASSIST SERVICE)

Mileage: 17,819

AT STARTUP, IF YOU SHIFT FROM PARK TO DRIVE OR REVERSE, THE BRAKE PEDAL STIFFENS AND IT IS HARD TO STOP. IF YOU ARE ABLE TO SPEED UP OVER A CERTAIN SPEED, SAY 15 TO 20 MPH, THEN THE TRUCK BRAKES FINE. I HAVE TAKEN IT TO THE DEALER AND THEY REPLACED THE BRAKE BOOSTER PUMP, BUT IT STARTED DOING IT AGAIN WITHIN A DAY OR TWO.

Mileage: 47,000

I BOUGHT MY GMC BRAND NEW WITH 25 MILES ON IT. THE FIRST TIME I HAD A BRAKING ISSUE WAS PULLING INTO WORK. I HAD ROUGHLY 56,500 MILES ON THE TRUCK AT THIS POINT. I WAS COMING IN CAUTIOUSLY DUE TO A HEAVY TRAFFIC AREA. AS I PULLED INTO MY PARKING SPOT I ENGAGED THE BRAKES. THE PEDAL WAS SOFTER THAN USUAL. I PUSHED DOWN HARDER AND I CAME TO A SLOW ROLLING STOP. I THOUGHT I WAS GOING TO HIT THE BUILDING. I LET THE TRUCK SIT/RUN 5MIN, (I AM MECHANICALLY INCLINED, WAS IN AUTOMOTIVE TECH COURSES FOR 3 YEARS) I CHECKED THE BRAKES/BRAKE FLUID AND TRIED THE BRAKES IN THE REVERSE GEAR. LET THE TRUCK CREEP BACK AND TESTED THE BRAKES. THEY WERE NORMAL AGAIN. I CALLED THE DEALERSHIP AND MADE AN APPOINTMENT.(UPLOADED SERVICE PAPERWORK). DEALER SAID THERE WASN'T A RECALL AT THIS TIME BUT WANTED ME TO DO A BRAKE FLUID FLUSH BUT I WASN'T IN WARRANTY ANYMORE SO IT WAS GOING TO COST ME OVER 100+ DOLLARS. THAT'S WHY I REFUSED THE SERVICE. THE WINTER MONTHS GO BY AND MY BRAKES ARE FINE. THE SECOND TIME I NOTICED THIS ISSUE, WAS SPRING TIME THE FOLLOWING YEAR, I WAS PUTTING MY PONTOON BOAT IN THE WATER. BACKING INTO THE WATER I WENT TO STOP AND MY TRUCK KEPT ROLLING INTO THE WATER. I ENGAGED THE EMERGENCY FOOT BRAKE. I PULLED FORWARD AND THE BRAKES WERE BACK TO NORMAL. I TEST DROVE THE TRUCK IN THE EMPTY PARKING LOT THIS TIME, SEE IF IT WOULD HAPPEN AGAIN. CALLED THE DEALERSHIP AND ASKED IF THERE WAS A RECALL AND THEY SAID NO. BRAKES ARE BACK TO NORMAL AT THIS POINT. FINALLY THAT YEAR I RECEIVED A RECALL NOTICE IN THE MAIL. I WENT TO THE DEALERSHIP COMPLETED THE RECALL. I THOUGHT EVERYTHING WAS FIXED. APPARENTLY NOT. I WAS STUCK IN A TRAFFIC JAM AT A SLOW ROLL, BRAKING MORE FREQUENTLY AND THE PEDAL WENT SOFT AND TO THE FLOOR AGAIN. I ALMOST HIT THE VEHICLE IN FRONT OF ME. I STOPPED JUST IN THE NICK OF TIME. I AM NOW CURRENTLY WORKING WITH THE DEALERSHIP TO GET THIS BRAKE ISSUE RESOLVED.

Mileage: 94,000

AT VERY LOW SPEEDS SUCH AS BACKING UP OR PARKING THE BRAKE PEDAL WILL NOT INDICATE PRESSURE AS IF THE TRUCK WAS SHUT OFF. WHILE BACKING UP OR PARKING YOU MAY HIT ANOTHER VEHICLE. THIS HAS HAPPENED MORE THAN A FEW TIMES AND WE RETURNED THE TRUCK TO HAVE THIS CONDITION CORRECTED. GMC DEALER SAID IT WAS A RECALLED FOR THAT ISSUE AND IT WAS CORRECTED BUT IT SEEMS TO HAVE RETURNED.

Mileage: 48,000

WHILE BACKING OUT OF A PARKING SPACE, I LOST THE ABILITY TO DEPRESS THE BRAKE PEDAL. IT WAS STUCK MOMENTARILY. IT ONLY MOVE AFTER I STOMPED ON IT TWICE. AFTERWARD, THE VEHICLE WOULD STOP, BUT THE BRAKES WERE SQUISHY AND VERY EASILY OVER APPLIED. SERVICE BRAKE CONTROL MESSAGE IS NOW ON THE DASH. TRUCK HAS 42000 MILES.

Mileage: 42,000

DRIVING ON THE HIGHWAY BRAKES LOCKED UP BREAK PEDAL SUPER HARD TO PRESS

Mileage: 61,100

I WAS DRIVING MY DOWN A 4 LANE HIGHWAY AND WHEN I WENT TO STOP I HAD NO BRAKES AND REAR ENDED A VEHICLE. MY BREAK PEDDLE WENT TO THE FLOOR.

Mileage: 110,000

I BOUGHT THIS VEHICLE IN JULY OF 2019 FROM A GMC DEALERSHIP IN DUNCANSVILLE PA. IN LATE NOVEMBER ON MY WAY TO WORK RANDOMLY MY SERVICE STABILI TRAK, ABS, ASSISTED STEERING, AND BRAKE LIGHT LIT UP ON MY DASH EVERY 30 SECONDS REPETITIVELY FOR THE REMAINDER OF THE TRIP (3 HOURS). I WORK 4 HOURS FROM HOME FOR 2 WEEKS AT A TIME I SPEND VERY LITTLE TIME IN MY VEHICLE DURING THIS TIME. I SEEN THE LIGHTS COME UP RANDOMLY WHILE OUT OF TOWN ALSO. ONCE MY WORK WEEKS WERE OVER ON MY WAY HOME THE PROBLEM PERSISTED. I TOOK IT FOR AN OIL CHANGE AND RECALL LATE DECEMBER. THEY TOLD ME THEY COULD NOT REPLICATE ANY LIGHTS NOR WERE THEY SHOWING ANY CODES. AS OF LAST MONTH THE PROBLEM IS GETTING WORSE TO THE POINT WERE I AM COMPLETELY LOSING MY POWER STEERING SOMETIMES FOR DAYS AT A TIME. LAST WEEK I TOOK MY VEHICLE DOWN FOR ANOTHER RECALL SENT FROM GM SPECIFICALLY FOR MY VIN I WAS TOLD THERE WASN'T ANY ISSUES OR CODES. ALL THEY COULD FIND IS A COMMUNICATIONS ERROR AND THEY WOULD NEED TO KEEP IT FOR A FEW DAYS AND SENT ME ON MY WAY HOME UNTIL THEY HAD A LOANER VEHICLE AVAILABLE. ONE WEEK LATER AFTER SEVERAL ATTEMPTS TO GET MY TRUCK IN I STILL HAVE A LIT UP DASH, NO POWER STEERING, AND NOT A CLUE WHEN IT'LL EVEN BE ABLE TO BE LOOKED AT SINCE I LEAVE FOR WORK IN 2 DAYS. THIS IS A COMMON PROBLEM FROM WHAT I HAVE READ AND CAN BE EXTREMELY DANGEROUS ESPECIALLY IN WINTER/SNOW/ICY CONDITIONS. I NEED A VEHICLE THAT I CAN FEEL SAFE IN THAT I CAN TRAVEL WITHOUT WORRYING AROUND EVERY TURN IF MY POWER STEERING IS GOING TO SHUT OFF AND I'M GOING TO HAVE TO POWER A VEHICLE AROUND A TURN OR TO AVOID AN ACCIDENT. I FEEL LIKE MY PROBLEM IS BEING BRUSHED UNDER THE RUG. ON MY WAY HOME THAT DAY JUST 2 MILES FROM MY HOUSE MY POWER STEERING WENT OUT AND I SLID OFF THE ROAD FORTUNATELY I LIVE IN THE COUNTRY AND NOTHING WAS IN THE FIELD I SLID INTO. I HAVE PHOTOS AND VIDEOS OF THE LIGHTS FLASHING OFF AND ON.

Mileage: 38,000

WHEN BRAKING THE BRAKE PADDLE GETS HARD AND DOES NOT ALLOW ME TO BRAKE. THANKFULLY IT HAS HAPPEN ONLY WHEN I AM PARKING OR COMING TO A STOP. LESS THEN A MONTH AGO I TOOK IT IN TO OUR LOCAL GMC DEALER AND IN HALF AN HOUR THEY SAID IT WAS FIXED. A FEW DAYS AGO IT HAPPENED AGAIN AND WENT BACK TO LOCAL DEALER AND CUSTOMER SERVICE SAID THEY CAN SCHEDULE ME IN TWO WEEKS TO FIX THE ISSUE. I DON'T FEEL COMFORTABLE DRIVING WHEN IT'S A BRAKE ISSUE I BELIEVE IT SHOULD BE FIXED OR AT LEAST TRY TO FIX THE ISSUE AS SOON AS POSSIBLE NOT IN TWO WEEKS.

WHEN BRAKING AT SLOW SPEEDS OR CLOSE DISTANCES THE TRUCK LOSES BRAKES AND IT SEEMS AS IF ABS KICKS ON. BRAKE PEDAL BECOMES VERY HARD TO PUSH AND IS ALMOST AT FLOOR. DOES IT IN REVERSE AS WELL AS DRIVE. DOES THIS AT RANDOM TIMES. IN ORDER TO DRIVE TRUCK SAFELY YOU HAVE TO SLOW DOWN WAY BEFORE COMING TO STOP.

Mileage: 56,472

I HAD IT TWICE NOW WHERE I PUSH ON THE BRAKES AND THE BRAKES BECOME SOFT AND THE TRUCK WON'T STOP. I NEARLY REAR ENDED A CAR THIS WEEKEND WHEN SUDDENLY THE BRAKES GRABBED BUT NOW I'M NERVOUS TO DRIVE IT IN FEAR OF CAUSING AN ACCIDENT OR INJURY I THINK IT'S SOMETHING GM SHOULD BE LOOKING INTO FOR A RECAL FOR THE SAFETY ISSUE IT CAUSES

Mileage: 113,000

WE CONTACTED SARAH AT GMC CORPORATE ON 1/2 CONCERNING COVERING BRAKE REPAIR COSTS. AT THE END OF LAST YEAR, MY HUSBAND HAD INTERMITTENT BRAKE ISSUES WHILE DRIVING AT LOW SPEEDS. WE IMMEDIATELY TOOK THE TRUCK TO THE DEALER (MID-DEC, 2019). THIS BRAKE RECALL ISSUE WAS 'FIXED' BY FITZGERALD GMC IN ROCKVILLE, MD. HOWEVER, AFTER THE 'RECALL REAPIR,' TOWARD THE END OF DEC 2019 AND INTO JAN 2020, THE BRAKES CONTINUED TO RANDOMLY FUNCTION IMPROPERLY AT LOW SPEEDS. FITZGERALD WANTS TO CHARGE US FOR THE DIAGNOSTIC AND FOR REPAIRS ($1100). WE ARE HOPING THAT GMC WILL COVER THE COST OF FIXING THIS RECALL ISSUE, AS THE 'RECALL FIX' FROM FITZGERALD DID NOT RESOLVE THE BRAKE PROBLEM, AND IS A SAFETY CONCERN. I WE TOLD BY SARAH THAT GMC WOULD CONSIDER COVERING AS WE ARE JUST OUTSIDE THE WARRANTY BUT SHE WOULD HAVE TO ESCALATE THE REQUEST TO A SENIOR ADVISOR. TO DATE (1/10/20) WE HAVE NOT RECEIVED A RESPONSE FROM GMC AND OUR CAR SITS AT THE DEALERSHIP!

Mileage: 42,000

2 TIMES NOW MY TRUCK BRAKES DID NOT WORK. I MEAN, THEY LITERALLY DIDNT WORK. THE FIRST TIME IT HAPPENED MY PICKUP ALMOST HIT MY HOUSE. THE SECOND TIME IT HAPPENED THE PICKUP HIT ANOTHER VEHICLE AT MY HOME CAUSING DAMAGE TO BOTH VEHICLES. I AM CURRENTLY IN FEAR OF DRIVING THIS PICKUP TRUCK DO TO THESE 2 BRAKE FAILURES. WILL THE NEXT CRASH ACTUALLY HURT SOMEONE? GMC NEEDS TO REPAIR THESE BRAKE FAILURE ISSUES. AGAIN, THERE WAS ABSOLUTELY NO BRAKES EVEN THOUGH I PRESSED ON THE BRAKE PEDAL AS HARD AS I COULD. THE PROPERTY DAMAGE AMOUNT FROM THE SECOND BRAKE FAILURE IS WELL OVER $2,000.00. PLEASE HAVE GMC REPAIR/FIX THIS PROBLEM SO I CAN DRIVE MY PICKUP WITHOUT WORRY AND MORE DAMAGE.

Mileage: 4,400

BRAKES HAD ALREADY BEEN REPAIRED BY DEALER UNDER RECALL PRIOR TO THIS INCIDENT. FOR SEVERAL WEEKS I NOTICED PROBLEMS. THE HILL ASSIST WOULD NOT HOLD EVEN WHEN BRAKING THE TRUCK ROLLED BACK ON HILLS. THE PETAL WOULD FEEL HARD LIKE SOMETHING WAS KEEPING IT FROM DEPRESSING. FINALLY, THE BRAKES FAILED AGAIN WHILE I WAS IN LINE AT A FAST FOOD RESTAURANT. ONE SECOND THEY WORKED, THE NEXT THEY DID NOT! I WAS MOVING SLOWLY AND ABLE TO PUT IT IN PARK. GOT OUT AND ASKED FOR HELP MOVING IT OUT OF LINE AND INTO A PARKING SPOT. I PUT IT BACK IN GEAR ONCE PEOPLE HAD STOPPED CROSS TRAFFIC AND ROLLED SLOWLY INTO A PARKING SPOT. APPROACHING THE LIGHT POLE, I DEPRESSED THE BRAKE AGAIN AND IT WOULD NOT DEPRESS. THERE WAS A SCRAPING SOUND AND I PUMPED THEM SEVERAL TIMES, BUT IT DIDN'T FEEL LIKE THERE WAS ANY GIVE AT ALL. I ROLLED TO CURB AND PUT INTO PARK. I HAD THE TRUCK TOWED TO DEALER, TRADED IT FOR ANOTHER CAR AND NEVER DRIVE AGAIN. DATE WAS NOVEMBER 15, 2019. 8:30 AM. THE TRUCK HAD APPROXIMATELY 50,750 MILES ON IT. VERY SCARY AND DANGEROUS AS THERE WERE MANY PEDESTRIANS INCLUDING CHILDREN IN PARKING LOT AND USING CROSSWALK WHICH TRANSECTS DRIVE LANE. THIS PROBLEM WAS SUPPOSED TO HAVE BEEN FIXED AT DEALER JUST A FEW WEEKS BEFORE, SO FIX OBVIOUSLY DID NOT WORK!!

Mileage: 50,750

TL* THE CONTACT OWNS A 2016 GMC SIERRA 1500. WHILE DEPRESSING THE BRAKE PEDAL, THE PEDAL TRAVELED TO THE FLOORBOARD AND THE VEHICLE WAS UNABLE TO STOP. THE CONTACT MENTIONED THAT THE EMERGENCY BRAKE HAD TO BE APPLIED TO STOP THE VEHICLE. THE VEHICLE WAS TAKEN TO FERGUSON BUICK GMC (1015 N INTERSTATE DR, NORMAN, OK 73069, 405-561-4775) TO BE DIAGNOSED, BUT THE FAILURE COULD NOT BE DUPLICATED. THE VEHICLE WAS TAKEN TO AN INDEPENDENT MECHANIC WHO DIAGNOSED THAT THE MASTER CYLINDER, ABS PUMP, AND SENSOR FOR THE VACUUM PUMP NEEDED TO BE REPAIRED. THE VEHICLE WAS REPAIRED; HOWEVER, THE FAILURE RECURRED A WEEK LATER. THE VEHICLE WAS TAKEN TO FERGUSON BUICK GMC (1015 N INTERSTATE DR, NORMAN, OK 73069, 405-561-4775) WHERE IT WAS DIAGNOSED THAT THE VACUUM PUMP AND ABS PUMP NEEDED TO BE REPLACED. THE VEHICLE WAS REPAIRED, BUT THE FAILURE PERSISTED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 1,500.

Mileage: 1,500

TL* THE CONTACT OWNS A 2016 A GMC SIERRA 1500. WHILE DRIVING 65 MPH, THE VEHICLE STARTED WOBBLING. THE VEHICLE WAS TAKEN TO WALLINGFORD BUICK GMC (1122 OLD NORTH COLONY RD, WALLINGFORD, CT 06492, (203) 269-8741) WHERE THE BRAKE PADS ON THE FRONT DRIVER'S SIDE WHEEL WERE REPLACED; HOWEVER, THE FAILURE RECURRED. THE VEHICLE WAS TAKEN BACK TO THE DEALER AND TEST DRIVEN. THE TECHNICIAN DIAGNOSED THAT THE ROTORS NEEDED TO BE RESURFACED, THE FRONT BRAKE PADS NEEDED TO BE CHANGED, THE TRANSMISSION FLUID NEEDED TO BE DRAINED, AND THE COMPUTER NEEDED TO BE RESET. THE CONTACT RETRIEVED THE VEHICLE AND THE FAILURES RECURRED THE FOLLOWING DAY. THE DEALER ADVISED THE CONTACT TO GIVE THE VEHICLE A FEW THOUSAND MILES TO WORK OUT THE FAILURES AND STATED THAT THE TRANSMISSION WAS ADJUSTING TO THE CONTACT'S DRIVING HABITS. THE VEHICLE WAS NOT REPAIRED AGAIN AND THE FAILURES WERE STILL PRESENT. THE FAILURE MILEAGE AND VIN WERE UNKNOWN.

AT LOW SPEED THE BRAKES BECOME HARD TO STOP THE VEHICLE AND IN REVERSE THE BRAKE PEDAL BECOME HARD AND BECOMES VERY DIFFICULT TO STOP TRUCK THE TRUCK WAS IN A DRIVE THROUGH AND ALMOST HIT ANOUTHER CAR DUE TO BRAKES FAILING A SERVICE BRAKE BOOSTER SOON WARNING CAME ON

Mileage: 71,900

I WAS ON MY WAY BACK FROM A BEACH VACATION SATURDAY, JUNE 29, 2019 ALONG WITH TWO OTHER VEHICLES DRIVEN BY OTHER FAMILY MEMBERS. I DRIVE A 2016 SIERRA 1500 SLT WITH 30,000 MILES ON IT. AFTER DRIVING FOR 1 1/2 HOURS WITH MANY OPPORTUNITIES TO USE MY BRAKES, OUR CONVOY NEEDED TO MAKE A STOP TO TURN LEFT. TO MY GREAT SURPRISE THE POWER ASSIST WAS NOT WORKING. AT FIRST I THOUGHT I HAD NO BRAKES AT ALL. I PRESSED HARD WITH BOTH FEET AND STOPPED THE TRUCK BEFORE I REAR ENDED MY SON IN LAW AND HIS FAMILY. SCARED ME TO DEATH!! I PHONED AHEAD TO OUR LEAD CAR AND TOLD THEM I HAD SERIOUS VEHICLE PROBLEMS. THERE'S NO WAY I COULD DRIVE 400 MILES WITH HEAVY TRAFFIC SAFELY. WE SEARCHED FOR THE NEAREST GM DEALER AND SELECTED J. M.JACKSON IN ANDALUSIA, AL. EVEN THOUGH IT WAS A SATURDAY, THE SALES PEOPLE CALLED THE SERVICE MANAGER WHO CAME IN ALONG WITH A SERVICE TECH. SHORTY I HAD A NEW VACUUM PUMP INSTALLED AND THERE WAS NO CHARGE SINCE GM HAD ISSUED A SERVICE BULLETIN. BUT NOW I'M WORRIED ABOUT ANOTHER FAILURE. I BARELY AVOIDED AN ACCIDENT THIS TIME. THERE WAS ABSOLUTELY NO WARNING PRIOR TO FAILURE . AFTER THE INITIAL FAILURE TO BRAKE PROPERLY, I GOT A SERVICE BRAKE ASSIST MESSAGE. VERY DANGEROUS FAILURE. A CRASH WAS NARROWLY AVERTED.

Mileage: 30,200

WHEN MOVING SLOWLY, THE ABS ERRANTLY ACTUATES RESULTING EXTENDED STOPPING DISTANCE. THIS HAPPENS INTERMITTENTLY. THE LAST TIME I WAS MOVING AT A SLOW (WALKING SPEED) PACE IN A PARKING LOT TO POSITION TO PARK. WHEN I APPLIED THE BRAKES (WHICH SHOULD HAVE STOPPED THE VEHICLE IMMEDIATELY) THE ABS KICKED ON AND, WITH THE BRAKE PEDAL FIRMLY DEPRESSED, THE VEHICLE ROLLED ANOTHER 12FT (APPROX) ALMOST STRIKING ANOTHER CAR WITH SOME PEOPLE STANDING NEARBY. I FEEL THE VEHICLE IS UNSAFE AND CANNOT INSURE AN ACCIDENT WILL EVENTUALLY RESULT.

Mileage: 37,167

THE BRAKES GET VERY HARD AND IS VERY DIFFICULT TO STOP AT LOW SPEEDS. THE DEALER IS FIXING IT AT NO COST STATING IT IS A SAFETY ISSUE BUT NOT A RECALL.

Mileage: 50,000

TRUCK HESITATES, JUMPS, AND BUMPS WHEN APPLYING BRAKES. WHEN STEPPING ON BRAKES TO STOP, IT BUMPS AND JUMPS BEFORE IT ACTUALLY COMES TO A FULL STOP. IT SEEMS YOU REALLY HAVE TO STEP ON THE BRAKE HARD TO MAKE IT COME TO A FULL STOP. THIS IS WORSE ON LOW SPEED, BELOW 30 MPH, STOP AND GO TRAFFIC. THERE WERE A NUMBER OF INSTANCES I ALMOST REAR ENDED VEHICLES IN FRONT OF ME DUE TO THIS PROBLEM. THE TRUCK ALSO BUMPS AND JUMPS WHEN TAKING OFF. I THINK THIS STARTED A FEW MONTHS AFTER I GOT THE TRUCK BRAND NEW. IT IS GETTING PROGRESSIVELY WORSE. I TOOK IT A NUMBER OF TIMES TO GM SERVICE CENTER; THEY DID A TRANSMISSION RELEARN, SOFTWARE UPDATES, AND TRANSMISSION FLUSH--TRUCK GOT BETTER FOR ONLY A FEW HUNDRED MILES, THEN SAME PROBLEMS RECURRED. THE LATEST COUPLE OF TIMES I WENT BACK TO GM SERVICE, THEY TOLD ME NOTHING IS WRONG WITH MY TRUCK. IT HAS BEEN VERY FRUSTRATING DEALING WITH THIS PROBLEM AND GM SERVICE FOR THE PAST 3 YEARS.

Mileage: 40,000

THIS ISSUE BEGAN LAST YEAR IN NOV. 2018. WE WERE IN TRAFFIC AND STOPPING AND GOING UNTIL WE COULDN'T STOP AND THE BRAKE PEDAL WAS TO THE FLOOR AND THE CAR WAS STILL MOVING. WE BROUGHT THE TRUCK TO THE DEALER AND THEY SAID IT WAS THE BRAKE PADS. WE PAYED $1700 TO REPLACE ALL THE PADS. THE OTHER DAY (3 MONTHS WITH THE NEW BRAKES) THE ISSUE HAPPENED AGAIN AND THE TRUCK WOULDN'T STOP, ALMOST CAUSING AN ACCIDENT THAT COULD HAVE SERIOUSLY INJURED THE ELDERLY LADY IN FRONT OF US AND OURSELVES. THIS ISSUE IS GETTING WORSE AND PRESENTS A HAZARD TO US AND EVERYONE ON THE ROAD. THIS ISSUE OCCURS AT RANDOM TIMES, SLOWING TO GET OFF AN EXIT RAMP, IN TRAFFIC, STOPPING FOR CROSS WALKERS, ETC. WE BROUGHT IT TO THE DEALERSHIP AND THEY REQUIRE US TO REENACT (PUTTING EVERYONE IN DANGER) THE ISSUE AND UNTIL THEY EXPERIENCE IT, THEY WON'T FIX IT. LEAVING US WITH A CAR THAT DOESN'T STOP THAT WILL SOONER OR LATER CAUSE AN ACCIDENT.

Mileage: 45,000

WHEN BRAKING AT LOW SPEEDS, ESPECIALLY IN REVERSE, BRAKES FAIL. I HAVE TO PUSH THE PEDAL ALL THE WAY TO THE FLOOR AND THEY STILL DO NOT OPERATE CORRECTLY. THIS IS A CONSISTENT, MULTI-INCIDENT, PROBLEM SINCE PURCHASE. MANIFESTS ESPECIALLY WHEN BACKING INTO A PARKING SPOT.

Mileage: 15,000

MY TRUCK BRAKES DON'T WORK WHEN I AM GOING SLOWLY. I HAVE TO PUSH IN THE BRAKE PEDAL VERY HARD AND IT FEELS LIKE I'M STEPPING ON A ROCK. THE BRAKES DON'T WORK WHEN I AM MOVING SLOWLY(DRIVE THROUGH, PULLING INTO PARKING SPACE, PULLING INTO GARAGE, COMING TO A STOP AT AN INTERSECTION WHEN GOING SLOW). IT IS VERY SCARY. I HAVE NOT HIT ANYTHING YET, BUT I FEEL I WILL.

Mileage: 69,000

BRAKES FAILED COMPLETELY AT LOW TO MODERATE SPEEDS BOTH GOING FORWARD AND IN REVERSE. BRAKE PEDAL WENT FLAT TO THE FLOOR AND THE VEHICLE FAILED TO STOP. INITIALLY OCCURRED NOVEMBER 7, 2018 AND HAS PERIODICALLY RECURRED SINCE THEN. AS OF MARCH AND APRIL 2019 IT HAS BEGUN TO RECUR MORE FREQUENTLY. AFTER THE INITIAL OCCURRENCE I TOOK THE VEHICLE IMMEDIATELY TO THE DEALER. THEY COULD NOT REPLICATE THE PROBLEM AND TOOK NO CORRECTIVE ACTION. THEY DID RECOMMEND REPLACING THE FRONT BRAKE PADS AND MACHINING THE ROTORS, WHICH I HAD THEM DO. MILEAGE WAS 44,522 AT THAT TIME. IT IS BACK WITH THE DEALER TODAY AND THE FOCUS SEEMS TO BE THE BRAKE VACUUM PUMP. OF COURSE, THE VEHICLE IS NOW OUT OF WARRANTY SO I'M WAITING TO SEE IF THEY WILL PERFORM THE REPAIRS AT GMC'S EXPENSE OR NOT. IF NOT, I WILL LIKELY BEGIN CONTACTING OTHER OWNERS TO CREATE A GROUP LARGE ENOUGH TO INITIATE A CLASS ACTION LAWSUIT.

Mileage: 44,522

WITH 48,000 MILES, THE BRAKES ARE VERY SOFT AND INEFFECTIVE AT LOW SPEEDS. BOTH IN FORWARD AND REVERSE. IN READING ON LINE POST, THIS APPEARS TO BE A VERY COMMON PROBLEM IN 2014-2016 PICKUPS. IT APPEARS THE VACCUUM PUMP IS OUT AND WILL NEED REPLACED. THIS SHOULD BE A SAFETY RECALL AS I COULDNT STOP VERY WELL THE FIRST TIME IT HAPPENED.

Mileage: 48,000

BRAKES WERE VERY HARD TO APPLY AT SLOW SPEED. ALMOST CAUSED COLLISION WITH VEHICLE.

Mileage: 31,000

BRAKE PEDAL GETS VERY HARD CAN HARDLY STOP RIG DOES IT MORE WHEN GOING SLOW THEN AT HIGHWAY SPEED GOT TO BE VERY CAREFUL CAUSE YOU HAVE TO PRESS VERY HARD TO GET IT TO STOP

Mileage: 36,000

VEHICLE WOULD NOT BRAKE EFFECTIVELY UNDER NORMAL DRIVING CONDITIONS. SERVICED AT DEALER AND VACUUM PUMP WAS FOUND TO BE DEFECTIVE.

Mileage: 80,000

BRAKE PEDAL BECOMES EXTREMELY HARD TO DEPRESS. THE VEHICLE FAILS TO SLOW DOWN AT A REASONABLE RATE EVEN WHEN VERY SIGNIFICANT (FOOT) PRESSURE IS APPLIED. THIS OCCURRED MANY TIMES; THREE OCCURRENCES WHEN BACKING UP AND TWO OCCURRENCES WHEN DRIVING FORWARDS. ALL OF THESE EVENT OCCURRED AT VERY SLOW SPEED, BASICALLY WHEN MOVING THE VEHICLE INTO A PARKING SPOT. ALL EVENTS WERE PRECEDED BY SLOW DRIVING (< 4 MPH) FOR ABOUT ONE MINUTE. THE LOSS OF STOPPING POWER OCCURRED SUDDENLY; EVEN A FEW SECONDS BEFORE THERE APPEARED TO BE NO ISSUE. INITIALLY IT WAS IGNORED AS AN INDIVIDUAL OCCURRENCE, YET THE ADDITIONAL OCCURRENCES INDICATE AN ISSUE.

Mileage: 84,000

WHILE TRANSITING ON A MAJOR HIGHWAY IN NORTH FLORIDA THE TRAFFIC CAME TO A SUDDEN STOP AND UNFORTUNATELY WHEN I PRESSED THE BRAKE PEDAL NOTHING HAPPENED, I HAD TO PUSH THE PEDDLE WITH EXTREME POWER AND IT STILL WAS NOT ENOUGH. TO AVOID THE SLOWER VEHICLES I HAD TO PULL THE TRUCK ONTO THE GRASSY MEDIAN TO AVOID A POSSIBLE DEADLY COLLISION. I WAS ABLE TO RECOVER CONTROL OF THE TRUCK THANKFULLY. MYSTERIOUSLY THE BRAKES WORKED AGAIN WHEN I CAME BACK ONTO THE HIGHWAY. I TOOK THE TRUCK TO A NEARBY GMC SERVICE DEALER AND AFTER THE TRUCK WAS TESTED THEY INFORMED ME THAT THEY FOUND A FAULTY BRAKE VACUUM PUMP. IN DISCUSSION WITH THE DEALER THEY ALSO INFORMED ME THAT THIS IS BECOMING A "SOMEWHAT COMMON" ISSUE. WITHOUT WARNING OR ANY INDICATOR THE BRAKE SYSTEM FAILED, THIS IS COMPLETELY UNACCEPTABLE. LIVES COULD HAVE EASILY BEEN LOST DUE TO A MALFUNCTION PART. VEHICLE ONLY HAD 27K MILES ON IT.

Mileage: 27,800

BRAKE PEDAL BECOMES EXTREMELY HARD TO DEPRESS. THE VEHICLE FAILS TO SLOW DOWN AT A REASONABLE RATE EVEN WHEN VERY SIGNIFICANT (FOOT) PRESSURE IS APPLIED. THIS OCCURRED NOW FOUR TIMES; THREE OCCURRENCES WHEN BACKING UP AND ONE OCCURRENCE WHEN DRIVING FORWARDS. ALL OF THESE EVENT OCCURRED AT VERY SLOW SPEED, BASICALLY WHEN MOVING THE VEHICLE INTO A PARKING SPOT. ALL EVENTS WERE PRECEDED BY SLOW DRIVING (< 3 MPH) FOR ABOUT ONE MINUTE. THE LOSS OF STOPPING POWER OCCURRED SUDDENLY; EVEN A FEW SECONDS BEFORE THERE APPEARED TO BE NO ISSUE. THE ISSUE REMAINED UNTIL I PUT THE CAR IN PARK AND TURNED OF THE ENGINE. THE ISSUE WAS NO LONGER THERE WHEN I RESTARTED THE ENGINE. THE INSTANCES OF THE ISSUE OCCURRED OVER THE LAST TWO MONTHS. INITIALLY IT WAS IGNORED AS AN INDIVIDUAL OCCURRENCE, YET THE THREE ADDITIONAL OCCURRENCES INDICATE AN ISSUE. A SIMILARITY OF THE CONDITIONS LEADING UP TO THE ISSUE IS THAT I DROVE VERY SLOWLY ON A FLAT (LEVEL) SURFACE. THE DURATION OF THIS DRIVE WAS MAYBE A MINUTE OR SO. (THE BEST WAY TO DESCRIBE THIS IS HOW ONE DRIVES WHEN LOOKING FOR A PARKING SPOT IN A BUSY PARKING LOT WITH LOTS OF PEDESTRIAN TRAFFIC).

Mileage: 40,700

WHEN I AM GOING AT A SLOW RATE OF SPEED AT FAST FOOD DRIVE-THROUGH OR BACKING DOWN MY DRIVEWAY IN REVERSE I GO TO PRESS ON MY PANEL AND NEXT THING YOU KNOW IT IS IS HARD AS A BRICK AND THE VEHICLE KEEPS GOING I HOLD MOST DIDN'T STOP GOING DOWN MY DRIVEWAY AND HIT ONE OF MY CHILDREN I'VE TOOK IT TO THE DEALERSHIP TWICE THEY SAY YOU CAN'T TAP YOUR BRAKES YOU HAVE TO LET THE VACUUM BUILD BACK UP THAT IS NO EXCUSE FOR THE VEHICLE NOT STOPPING!!!! THIS HAPPENS DAILY AT SOME POINT SOMETHING HAS TO BE DONE SOMEONE IS GOING TO GET HURT !!!!!!!

Mileage: 17,000

BRAKES BECOME STIFF AT SLOW SPEEDS NOW ALLOWING THE TRUCK TO PROPERLY STOP

Mileage: 50,000

WHEN ATTEMPTING TO STOP AT LOW SPEEDS, EXPERIENCING LITTLE TO NO BRAKE PRESSURE IN DRIVE AND REVERSE. THIS IS THE THIRD OCCURRANCE SINCE NOV 2018. SYMPTOMS INCLUDE STIFF BRAKE PEDAL AND AUDIBLE CLICK UPON RESUMING MOTION AND THUMP FELT IN BRAKE PEDAL FOLLOWED BY SIGNIFICANTLY REDUCED BRAKING ABILITY. NARROWLY AVOIDED THREE COLLISIONS ON COMMUTE TO WORK THIS MORNING IN NORMAL TRAFFIC CONDITIONS.

Mileage: 39,910

AT LOW SPEEDS THE VACUUM PUMP GETS WEAK AND DOES NOT PROVIDE THE NEEDED VACUUM TO THE BRAKE BOOSTER. RESULTING IN LOSS OF POWER BRAKES. WHILE PARKING I BACKED UP AND THEN PULLED FORWARD TO STRAIGHTEN UP. AS I CHANGED DIRECTION A PEDESTRIAN WALKED OUT IN FRONT OF ME AND NEARLY HIT THEM. I HAD TO STAND ON THE PEDAL WITH BOTH FEET. IF MY WIFE WOULD HAVE BEEN DRIVING THE TRUCK SHE WOULD HAVE RAN THE PEDESTRIAN OVER. THE DEALER CAN NOT REPLICATE THE PROBLEM AND THEY ARE NOT GOING TO REPLACE THE BOOSTER UNDER WARRANTY. ALTHOUGH GM DOES HAVE A TECHNICAL SERVICE BULLETIN IN PLACE ABOUT THIS EXACT ISSUE. TSB # PIT5361C. THIS IS A MAJOR SAFETY CONCERN!!!! AND GM DOES NOT CARE!

Mileage: 32,862

TL* THE CONTACT OWNS A 2016 GMC SIERRA 1500. THE CONTACT STATED THAT THE VEHICLE FAILED TO RESPOND WHEN THE BRAKE PEDAL WAS DEPRESSED. THE CONTACT HAD TO APPLY FORCE TO THE BRAKE PEDAL EACH TIME THE FAILURE OCCURRED. OURISMAN CHEVROLET BUICK GMC OF ALEXANDRIA (1800 OLD RICHMOND HWY, ALEXANDRIA, VA 22303, (571) 366-8047) WAS NOTIFIED SEVERAL TIMES FOR MONTHS AND STATED THAT FURTHER DIAGNOSTIC TESTING WAS NEEDED. THE VEHICLE WAS NOT REPAIRED. THE CONTACT STATED THAT THE VEHICLE EXPERIENCED THE SAME SYMPTOMS AS LISTED IN NHTSA PRELIMINARY EVALUATION NUMBER: PE18012 (SERVICE BRAKES, HYDRAULIC, SERVICE BRAKES), BUT WAS EXCLUDED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS NOT AVAILABLE.

LOST POWER BRAKES WHEN DEPRESSING THEM AS I WAS BACKING INTO A PARKING SPOT. I HAD TO PRESS REPEATEDLY TO GET PRESSURE BACK IN THE BRAKES. LUCKILY STOPPING IN TIME. IT HAPPENED AGAIN LATER THIS EVENING WHEN I WAS ROLLING TO A STOP AT A LIGHT. THE BRAKES AGAIN LOST POWER AND I HAD TO PRESS THEM REPEATEDLY STOP THE TRUCK BEFORE HITTING THE CAR IN FRONT OF ME.

Mileage: 46,000

TL* THE CONTACT OWNS A 2016 GMC SIERRA 1500. WHILE DRIVING VARIOUS SPEEDS, THE BRAKES SUDDENLY MALFUNCTIONED AND THE BRAKE PEDAL BECAME VERY DIFFICULT TO DEPRESS. THE VEHICLE WAS TAKEN TO COATHELLA VALLEY GMC (78960 GARNER RD, INDIO, CA) WHERE IT WAS DIAGNOSED THAT THE BRAKE VACUUM PUMP WAS FAULTY. THE VACUUM PUMP WAS REPLACED, BUT THE FAILURE RECURRED. THE MANUFACTURER WAS NOT NOTIFIED. THE VIN WAS NOT AVAILABLE. THE FAILURE MILEAGE WAS 143,000.

Mileage: 143,000

WHEN TRAVELING AT SLOWER SPEEDS IN STOP AND GO TRAFFIC ON THE HIGHWAY THE BRAKE PEDDLE BECOMES VERY HARD AND I AM UNABLE TO STOP THE TRUCK. NO OTHER VECHILES WERE HIT, BUT IT WAS A VERY UNCOMFORTABLE SITUATION. THIS HAS ALSO HAPPEN SERVEL TIMES IN FORWARD AND REVERSE WITHIN PUBLIC PARKING LOTS. I HAVE BEEN A ABLE TO DETERMINE THE TRUCK LOSES POWER BRAKES WHEN THE BRAKE PEDDLE IS APPLIED 4-5 TIMES WHILE TRAVELING SLOW.

Mileage: 68,000

TL* THE CONTACT OWNS A 2016 GMC SIERRA 1500. WHILE DRIVING AT LOW SPEEDS, THE VEHICLE WOULD NOT STOP IN A TIMELY MANNER WHEN THE BRAKE PEDAL WAS DEPRESSED. THE CONTACT HAD TO DEPRESS THE BRAKE PEDAL SEVERAL TIMES TO STOP THE VEHICLE. THE VEHICLE WAS TAKEN TO RON ANDERSON CHEVROLET BUICK GMC (464054 E STATE ROAD, YULEE, FL, (904) 572-4132) WHERE IT WAS DIAGNOSED THAT THE BRAKE VACUUM PUMP FAILED AND NEEDED TO BE REPLACED. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOT CONTACTED. THE FAILURE MILEAGE WAS 41,000.

Mileage: 41,000

TL* THE CONTACT OWNS A 2016 GMC SIERRA 1500. WITHIN LESS THAN A WEEK OF OWNING THE VEHICLE, THE BRAKE PEDAL FELT HARD AND WAS DIFFICULT TO DEPRESS. CORWIN CHRYSLER DODGE JEEP RAM FIAT (1025 W SUNSHINE ST, SPRINGFIELD, MO 65807, (417) 862-9272) WAS INFORMED, BUT THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE VEHICLE COULD NOT BE DRIVEN SAFELY DUE TO THE FAILURE. THE DEALER STATED THAT THE VEHICLE MAY BE SERVICED PER A WARRANTY, BUT IT WOULD NOT BE IN EFFECT FOR ANOTHER SIXTY DAYS. THE DEALER STATED THAT THE VEHICLE MAY BE SERVICED FOR TSB: PIT-5361B (ADDITIONAL BRAKE PEDAL EFFORT). THE MANUFACTURER WAS NOT NOTIFIED. THE APPROXIMATE FAILURE MILEAGE WAS 71,000.

Mileage: 71,000

2016 GMC SIERRA- BOUGHT USED HARD SHIFTING NOTED IMMEDIATELY AND SHUTTERING ON INCLINES, TOOK TO DEALERSHIP HAD PART REPLACED- FIXED SHUTTERING BUT NOT HARD SHIFTS- NOW IT NOT ONLY SHIFTS HARD BUT WHILE I WAS TRYING TO STOP AT A DRIVE THROUGH THE BRAKES FAILED- LUNGES FORWARD ALMOST HITTING THE CAR IN FRONT OF US- NEXT DAY I PULLED INTO A PARKING SPOT SAME THING HAPPENED- BRAKES WOULD NOT COMPRESS- STOOD ON THE BRAKE BEFORE IT FINALLY STOPPED- BACKED UP A BIT TO STRAIGHTEN UP AND THE [XXX] THING DID IT AGAIN IN REVERSE. I'M TRAVELING BACK HOME TO ARKANSAS FROM FLORIDA IN A FEW DAYS WITH MY CHILDREN AND I'M SCARED TO DEATH TO DRIVE THIS THING. I CAN'T GET IT LOOKED AT BEFORE WE LEAVE BECAUSE OF THE WEEKEND/ CHRISTMAS BREAK.SERIOUSLY UNSAFE VEHICLE! THERE SHOULD BE RECALLS ON THESE VEHICLES! I'VE READ SO MANY SIMILAR STORIES, WHY HAS THIS NOT BEEN ADDRESSED YET? GMC SHOULD BE ASHAMED. PARTS OF THIS DOCUMENT HAVE BEEN REDACTED TO PROTECT PERSONALLY IDENTIFIABLE INFORMATION PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6).

Mileage: 57,000

I HAVE EXPERIENCED LOSS OF POWER BRAKE BOOST ON NUMEROUS OCCASIONS, SEVERAL TIMES WHILE BACKING MY BOAT TRAILER DOWN THE BOAT RAMP, AND SEVERAL OCCASIONS BACKING UP AT SLOW SPEEDS AND GOING FORWARD AT SLOW SPEEDS (USUALLY LESS THAN 5 MPH). THE BRAKE PEDAL BECOMES VERY HARD TO DEPRESS, AND TRUCK FEELS LIKE IT'S NOT GOING TO STOP UNLESS I APPLY EXTREME PRESSURE. IT HAS BEEN INTERMITTENT. I ASKED MY LOCAL GMC DEALER ABOUT THE ISSUE THIS PAST FALL, AND WAS TOLD THEY COULDN'T DO ANYTHING UNTIL IT FAILED AND COULD BE REPLICATED. I DIDN'T EXPERIENCE IT AGAIN FOR SEVERAL MONTHS, BUT THIS WEEK IT HAS OCCURRED AT LEAST THREE TIMES. I CALLED DEALER TO MAKE AN APPOINTMENT, WHICH THEY DID, BUT THEY AGAIN TOLD ME THAT UNLESS THEY CAN REPLICATE IT, THEY WON'T BE ABLE TO FIX IT. I HAVE RESEARCHED THIS SITE AND HAVE FOUND A NUMBER OF INSTANCES WITH BOTH GMC SIERRA'S AND CHEVROLET SILVERADO'S EXPERIENCING THE EXACT SAME PROBLEM.

Mileage: 34,375

PULLING INTO MY GARAGE AT VERY SLOW SPEED, I DEPRESSED THE BRAKE PEDAL AND NOTHING HAPPENED. I HAD TO STAND ON THE BRAKE PEDAL TO PREVENT THE TRUCK FROM GOING THROUGH THE WALL AND INTO THE DINING ROOM. THOUGHT MAYBE THERE WAS SOME AIR IN THE BRAKE FLUID. LOOKED AT THE RESERVOIR AND NOTHING APPEARED OUT OF NORMAL. A COUPLE OF WEEKS LATER, TODAY 12/18/18, WHILE BACKING OUT OF A PARKING SPOT AT AN AUTOZONE, SOMEONE WALKED BEHIND THE TRUCK. AS I PRESSED THE BRAKE PEDAL TO STOP AND ALLOW THEM TO PASS, NOTHING HAPPENED. THE TRUCK KEPT GOING. I HAD TO STAND ON THE PEDAL TO PREVENT MY TRUCK FROM BUMPING INTO THE PEDESTRIAN. BOTH INCIDENTS HAD THE VEHICLE MOVING AT LESS THAN 5 MPH AND IDLE ENGINE POWER.

Mileage: 43,361

BRAKE PEDAL BECOMES HARD TO PUSH MAKING STOPPING A PROBLEM. HUGE SAFETY ISSUE. WHILE IN MOTION AT LOW RPM BRAKE PEDAL BECOMES HARD LIMITING THE STOPPING OF THE TRUCK

Mileage: 37,000

MY 2016 GMC SIERRA HAS 44,000 MILES ON IT. IN THE LAST 2 WEEKS I HAVE HAD 3 OCCASIONS WHEN TRAVELING AT VERY LOW SPEEDS THE BRAKE PEDAL BECOMES STIFF AND REQUIRES BOTH FEET TO DEPRESS ENOUGH TO GET THE VEHICLE TO STOP. EVEN WHEN COMPLETELY COMPRESSED WITH MY FULL FORCE THE VEHICLE CONTINUED TO ROLL SLOWLY. ONE TIME WAS IN A PARKING LOT AND THE OTHER 2 TIMES WERE AT DRIVE-THRU FAST FOOD SPOTS. BRAKE FUNCTION SEEMS COMPLETELY FINE AT NORMAL OPERATING SPEEDS. A SEARCH OF THE INTERNET LED ME TO FIND SEVERAL FORUMS WITH PEOPLE DESCRIBING THE EXACT SAME SITUATIONS. AT LOW SPEEDS THE BRAKE PEDAL BECOMING EXTREMELY STIFF AND CANNOT BE DEPRESSED MORE THAN 1". I WAS LUCKY TO BE ABLE TO STOP BY PUTTING MY TRUCK INTO NEUTRAL. IF I HAD ROLLED OUT IN CROSS TRAFFIC SOMEONE COULD HAVE BEEN KILLED. THERE ARE WAY TOO MANY STORIES EXACTLY LIKE MINE ALL OVER THE INTERNET FOR THERE NOT TO BE A SIGNIFICANT PROBLEM WITH THE VACUUM PUMP AND OR BRAKE BOOSTER OR SOME OTHER BRAKE SYSTEM COMPONENT ON 2014-2018 GMC PICKUPS AND LARGE SUVS.

Mileage: 44,000

VACUUM PUMP FAILED AND REPLACED AT MY OWN EXPENSE. BRAKES WOULD NOT DEPRESS, WERE VERY FIRM AND TRUCK CONTINUED TO ROLL EVEN WITH EXTRA FIRM PRESSURE ON BRAKE PEDDLE.

Mileage: 40,000

SEVERAL TIMES I'VE EXPERIENCED WEAK BRAKING A DIFFERENT SPEEDS OR WHILE SHIFTING FROM PARKING. I ALSO EXPERIENCE THE BRAKES NOT FULLY DEPRESSING AFTER I STEP ON THE BRAKES. I TOOK MY VEHICLE FOR A BRAKE INSPECTION THINKING I MAY NEED NEW BRAKES AND WAS TOLD BY THE INSPECTOR THAT THE PADS ARE NOT THE ISSUE, HE TOLD ME HE HAS NEVER SEEN AN ISSUE SIMILAR TO WHAT IS GOING ON WITH MY TRUCK AND INSTRUCTED ME TO TAKE IT TO THE DEALERSHIP. WHEN I CONTACTED THE DEALERSHIP THE SERVICE ADVISOR TOLD ME THAT IT SOUNDS LIKE I JUST NEED TO REPLACE THE BRAKE PADS AND ROTORS AND TOLD ME THAT HE DOESN'T BELIEVE THERE'S AN UNDERLYING ISSUE BASED ON WHAT I WAS TOLD AT THE OTHER SERVICE CENTER. ANY ISSUES WITH BRAKING COMPONENTS SHOULD BE ADDRESSED IMMEDIATELY BY THE MANUFACTURER BEFORE PEOPLE GET HURT OR SOMEONE IS KILLED.

Mileage: 37,500

HAD TO REPLACE VACUUME PUMP AFTER INTERMITTENT BRAKE FAILURE AT SLOW SPEEDS WITH ONLY 38,000 MILES ON THE TRUCK. BRAKE FAILURE WOULD OCCUR WITHOUT WARNING. DEALERSHIP DIAGNOSED THE ISSUE AFTER TESTING HE VACUUME PUMP, WHICH WAS READING 6 PSI. WAS TOLD THERE HAVE BEEN NO RECALLS FOR THIS ISSUE.

Mileage: 38,000

BRAKE PEDAL ROCK HARD AND WILL NOT PRESS DOWN

Mileage: 35,800

ON MULTIPLE OCCASIONS, THE BRAKES APPEARED TO LOOSE ALL BRAKE BOOSTER FUNCTION, CAUSING INCREDIBLY WEAK BRAKING AT LOW SPEEDS. TWICE IT FAILED IN A PARKING LOT SITUATION, WHERE THE EFFECT WAS MINIMAL (JUST REQUIRED PUSHING THE PEDAL WITH MAXIMUM FORCE I COULD GENERATE) THE MOST RECENT WAS A PARALLEL PARKING SITUATION WHERE THE BRAKE FAILURE ALMOST CASED A LOW SPEED COLLISION. I MISSED THE CAR BEHIND ME BY MERE INCHES!! I ADDRESS THIS WITH THE GM DEALER TWICE AND BOTH TIMES I RECEIVED "COULD NOT DUPLICATE" IT WILL BE NOTED AGAIN. THIS NEEDS TO BE ADDRESSED VIA A RECALL AS IT IS A MAJOR SAFETY ISSUE, AND IS NOT SPECIFIC TO MY TRUCK (THIS HAS BEEN DOCUMENTED ON THE INTERNET, AND THERE IS A TSB FOR IT WHICH MINE SUPPOSEDLY WAS NOT PART OF) THE PROBLEM IS LOW SPEED, AT IDLE MANUVERS WHERE THE BRAKES ARE REPLIED REPEATEDLY (LIKE PARKING). I NEVER NOTICED A PROBLEM AT ANY SPEED ABOVE CRAWL

Mileage: 31,500

WHEN BACKING INTO A PARKING SPOT AT MY RESIDENCE. I PULLED FORWARD TO STRAIGHTEN OUT AND MY BREAK PEDAL GOT HARD AND WOULD NOT COME TO A COMPLETE STOP FOR A FEW FEET AFTER INITIATING STOPPING PROCEDURE. I ALMOST RAN INTO MULTIPLE VEHICLES. IT WAS AS IF I WAS SLIDING ON ICE. I TRIED IT A COUPLE MORE TIMES THINKING IT WAS A FLUKE AND IT PERSISTED TO CONTINUE WITH THE SAME BEHAVIOR. I EVEN WENT AS FAR AS TURNING MY TRUCK OFF AND STARTING IT AGAIN TO SEE IF IT WAS AN ELECTRICAL ISSUE CAUSING IT AND NOPE CONTINUED TO DO IT. THIS IS A HUGE ISSUE THAT NEEDS TO BE TAKEN CARE OF AS I HAVE READ MULTIPLE COMPLAINTS OVER THE SAME THING.

Mileage: 52,900

BRAKE FAILURE - MULTIPLE TIME WHILE DRIVING MY 2016 GMC SIERRA, THE PEDAL HAS GOTTEN HARD & WILL NOT STOP THE CAR. THIS GENERALLY HAPPENS AFTER USING THE BRAKES SEVERAL TIMES QUICKLY. THE BRAKE PEDAL WILL GET HARD & THE TRUCK WILL NOT STOP. LUCKILY I HAVE NOT BEEN INJURED BUT THE PROBLEM IS VERY DANGEROUS & I FEAR FOR MY LIFE WHILE DRIVING THIS TRUCK. THERE IS A TECHNICAL SERVICE BULLETIN ON THE PROBLEM, TSB # PIT5361C, HOWEVER IT IS NOT A SAFETY RECALL. HOW MANY PEOPLE HAVE TO DIE BEFORE THE NHTSA ENFORCES A RECALL?

Mileage: 41,500

IN MARCH OF 2018, I BOUGHT MY 2016 GMC SIERRA 1500 Z71 4X4 USED WITH 36,000 MILES ON IT FROM CRAIN KIA OF CONWAY, AR. THE SALESMAN STARTED OFF BY TELLING ME THAT THEY DIDN'T HAVE ANYTHING I WANTED, BUT OF COURSE WHEN I WAS ABOUT TO HEAD OUT THE DOOR, HE RUNS UP TO ME AND TELLS ME THAT HE FOUND ONE THAT HE THINKS I WOULD LIKE, TOLD ME THAT THEY HAD LOST TRACK OF IT ON THEIR LOT AND IT HAD BEEN THERE FOR OVER 100 DAYS. I LIKED WHAT I SAW, IT WAS A GOOD PRICE, AND IT SEEMED LIKE A MECHANICALLY SOUND TRUCK. AFTER ABOUT A COUPLE WEEKS, I BEGAN TO NOTICE THAT I WAS HAVING TO PUMP THE BRAKES JUST TO STOP, BUT DIDN'T SEEM REAL BAD AT THE TIME. THE PROBLEM ONLY WORSENED SO I BROUGHT IT BY A LOCAL GM DEALERSHIP AND BODY SHOP TO SEE IF THEY COULD DIAGNOSE THE ISSUE, WHICH OF COURSE THEY TOLD ME THAT EVERYTHING WAS FINE. I CONTINUED TO DRIVE IT AND WHEN I WOULDN'T PUMP THE BRAKES, THEY BEGAN GLIDING, ALMOST LIKE I WAS TRYING TO STOP ON ICE BEFORE THEY WOULD ACTUALLY COME TO A COMPLETE STOP. I HAD TWO INCIDENTS' REGARDING THIS ISSUE WITH THE BRAKES WITHIN TWO MONTHS OF EACH OTHER. THE FIRST ON JULY 7, 2018: I WAS AT A STOP SIGN, COMPLETELY STOPPED. I WAS HEADING LEFT AT A THREE WAY INTERSECTION AND THERE WAS A CAR TURNING RIGHT SLOWLY ONTO THE STREET THAT I WAS LEAVING, SO I BARELY LIFTED MY FOOT OFF THE BRAKE TO MAKE MY LEFT TURN WHEN THE CAR DECIDED THAT THEY WERE GONNA GO STRAIGHT. I IMMEDIATELY SLAMMED ON THE BRAKES, BUT THE TRUCK JUST KEPT GOING FOR ANOTHER FEW FEET UNTIL THE BRAKES FINALLY STOPPED ME ALONG WITH THE OTHER INDIVIDUALS CAR. I IMMEDIATELY HAD THE BRAKES CHECKED OUT AGAIN AND OF COURSE NOTHING WAS FOUND. I TOOK IT TO A DIFFERENT BODY SHOP TO HAVE THE BUMPER REPLACED AND ASKED HIM IF HE COULD CHECK IT OUT, NOTHING TURNED UP. TO BE CONTINUED.........................

Mileage: 42,000

THE SECOND INCIDENT ON SEPTEMBER 1, 2018: 2016 GMC SIERRA 1500 Z71 4X4 CC I WAS SPEEDING UP TO MERGE ONTO A BUSY HIGHWAY IN DENVER, HEADED TO THE MOUNTAINS TO TAKE MY WIFE AND THREE BOYS CAMPING. A CAR IN FRONT OF US HAD BEGAN SLOWING DOWN, SO I BEGAN SLOWING DOWN, THEY SLAMMED ON THEIR BRAKES, SO I SLAMMED ON MINE. THE ONLY DIFFERENCE BETWEEN OUR VEHICLES BESIDES SIZE WAS THAT THEY CAME TO A COMPLETE STOP, AS SOON AS I SLAMMED ON MY BRAKES, THE TRUCK JUST GLIDED ON THE PAVEMENT AS IF IT WERE A SHEET OF ICE. THE ONLY THING TO STOP US WAS THE BACK OF THEIR VEHICLE! WE GOT A RENTAL TRUCK AND CARRIED ON WITH OUR CAMPING TRIP. AS WE DROVE PAST THE ACCIDENT SCENE SLOWLY HOURS LATER TO HEAD BACK TOWARDS THE MOUNTAINS, (TRAFFIC WAS MUCH LIGHTER) WE NOTICED THAT THE SKID MARKS FROM MY TRUCK WERE STRAIGHT WITH NO BREAKS IN THE SKID LINES, WHICH TO MY KNOWLEDGE INDICATES THAT THE ABS SYSTEM WAS NOT WORKING PROPERLY. I NEVER HAD ANY INDICATOR LIGHTS SHOW UP ON THE DASH. AFTER THAT ACCIDENT, MY WIFE AND I CONDUCTED A LOT OF RESEARCH, COME TO FIND OUT THAT GM TRUCKS HAD MULTIPLE COMPLAINTS WITH THEIR BRAKES, WISH I HAD DONE MY RESEARCH FIRST.

Mileage: 50,734

AT LOW RPM,'S AND AT LOW SPEED THE VACUUM ASSIST PUMP CANNOT SUPPLY ENOUGH ASSIST PRESSURE TO THE BRAKES, THIS DOES NOT LET THE POWER BRAKES WORK AS THEY ARE DESIGNED. WHEN THIS HAPPENS, MOSTLY WHEN BACKING A TRAILER UP BUT ALSO WHEN GOING FORWARD AT SLOW SPEEDS, THERE IS NO POWER ASSIST BRAKES AND A TYPE OF MANUAL BRAKE EXISTS. THIS TYPE OF MANUAL BRAKE REQUIRES MAXIMUM LEG PRESSURE IS REQUIRED TO SLOW DOWN AND/OR STOP, AND WHEN PRESSURE IS APPLIED THERE IS A TIME LAG FOR PRESSURE TO BE APPLIED SO THAT THE VEHICLE STOPS.THIS SAME PROBLEM OCCURS WITH NO TRAILER LOAD INVOLVED AND THE VEHICLE IS GOING SLOW. IT IS A DANGEROUS SITUATION WHEN ENTERING TRAFFIC AT A PERPENDICULAR ANGLE. OTHER COMPLAINTS HAVE BEEN MADE REGARDING THE SAME PROBLEM.

Mileage: 30,000

THE BRAKES ON MY 2016 GMC SIERRA 1500 WITH ONLY 31,700 MILES EXHIBITED A HARD BRAKE PETAL AND THE VEHICLE WOULD NOT STOP. THIS HAPPEND AT SLOW SPEEDS WHILE ATTEMPING TO STOP IN PARKING SPACES AND AT RED LIGHTS ON LOCAL ROADS.MOST FRIGHTENING WAS WHILE BACK MY TRUCK AND BOAT INTO A BOAT RAMP THE BRAKES WOULD NOT STOP THE VEHICLE! I BROUGHT THE TRUCK TO THE LOCAL DEALER WHO REPLACED THE BRAKE BOOSTER & THE VACCUM PUMP. I QUESTIONED IF THERE WERE ANY SERVICE BULLETINS AND I WAS TOLD THERE WERE NONE. FEARING THIS COULD HAPPEN AGAIN , I SEARCHED ON LINE AND FOUND OTHER COMPLAINTS EFFECTING NOT ONLY MY MAKE AND MODEL YEAR BUT OTHER GM/GMC MODELS AND YEARS. I ALSO FOUND A TEXAS LAWSUIT WHERE THE PLAITIFFS EXPERIENCE WAS VERY SIMILIAR TO MINE. I CONTACTED GMC CUSTOMER SUPPORT TO LODGE MY COMPLAINT AND REQUESTED AN EXTENSION TO MY BUMPER TO BUMPER WARRANTY . I WAS INSTRUCTED TO CONTACT MY LOCAL DEALER TO PURCHASE AND EXTENDED WARRANTY. THEY WENT ON TO SAY THERE ARE NO SERVICE BULLETINS OR RECALLS FOR THIS ISSUE FOR MY VEHICLE.... THIS NEEDS TO BE INVESTIGATED AS I AM OF THE OPINION THAT THIS IS A SAFTEY ISSUE THAT IS NOT BEING ADDRESSED PROPERLY. A VEHICE WITH LESS THAN 32,000 MILES SHOULD NOT BE HAVING THIS TYPE OF DANGEROUS PROBLEM . I'M OF THE BELIEF THERE IS A DEFECT SOMEWHERE THAT NEEDS TO BE FIXED BASED ON THE COMPLAINTS I'M SEEING FROM OTHERS ONLINE.

Mileage: 31,750

WHILE DRIVING AT SLOW SPEEDS THE BREAK PEDAL WILL NOT DEPRESS. THE PEDAL SEEMS TO GET STUCK. WHEN THIS HAPPENS IT IS DIFFICULT TO COME TO A COMPLETE STOP.

Mileage: 50,000

BRAKES ARE HARD TO PRES AND CAUSE THE VEHICLE TO NOT BE ABLE TO STOP. THE PROBLEM OCCURS AT LOW SPEEDS WHEN PARKING OR AT STOP LIGHTS. VEHICLE HAS 48K MILES.

Mileage: 48,000

VACUUM PUMP FAILURE. THE TRUCK HAD THE VACUUM PUMP FAIL AFTER ONLY 56,XXX MILES. THE PUMP FAILED AND CAUSE ME A HARD BRAKE PEDAL WHILE COMING TO A STOP. THE PART INTERNALLY FAILED AND WAS NOT PRODUCING ENOUGH VACUUM TO SUPPLY THE BRAKE BOOSTER. AFTER DISCUSSING THIS WITH THE DEALER IT WAS A COMMON PROBLEM AND NOT COVERED BY WARRANTY.

Mileage: 56,000

WHEN THE PEDDLES ARE RAISED AND YOU STEP ON THE BRAKE YOU COULD BE PUSHING THE GAS AND BRAKE AT THE SAME TIME. WHEN THE PEDDLES ARE LOWERED THIS DOES NOT HAPPEN. A LOT OF PEOPLE STEP ON THE SIDE OF THE BRAKE AND IT HAPPENS ONLY WHEN RAISED.

Mileage: 6,700